Results 101 to 110 of about 26,515 (184)

Formation and Evolution Simulations of Saturn, Including Composition Gradients and Helium Immiscibility

The Planetary Science Journal
In this paper, the formation of Saturn is modeled by detailed numerical simulations according to the core-nucleated accretion scenario. Previous models are enhanced to include the dissolution of accreting planetesimals, composed of water ice, rock, and ...
Peter Bodenheimer, David J. Stevenson, Jack J. Lissauer, Gennaro D’Angelo   +3 more
doaj   +1 more source

Bulk and Atmospheric Metallicities as Direct Probes of Sequentially Varying Accretion Mechanisms of Gas and Solids Onto Planets

The Astrophysical Journal Letters
Core accretion is the standard scenario of planet formation, wherein planets are formed by sequential accretion of gas and solids, and is widely used to interpret exoplanet observations.
Yasuhiro Hasegawa, Mark R. Swain
doaj   +1 more source

The Evolution of Giant Planets – Towards a Better Understanding of Gas Giants in- and outside the Solar System

, 2021
openaire   +2 more sources

An Energy Perspective of Core Erosion in Gas Giant Planets

The Astrophysical Journal Letters
Juno and Cassini have shown that Jupiter and Saturn likely contain extended gradients of heavy elements. Yet, how these gradients can survive over billions of years remains an open question.
J. R. Fuentes, Christopher R. Mankovich, Ankan Sur   +2 more
doaj   +1 more source

On the Origin of Jupiter’s Fuzzy Core: Constraints from N-body, Impact, and Evolution Simulations

The Astrophysical Journal
It has been suggested that Jupiter’s fuzzy core could be a result of a giant impact. Here, we investigate the expected impact conditions from N -body simulations. We then use state-of-the-art smoothed particle hydrodynamics simulations to investigate the
Thomas Meier, Christian Reinhardt, Sho Shibata, Simon Müller, Joachim Stadel, Ravit Helled   +5 more
doaj   +1 more source

3D Simulations of Convective Entrainment in Gas Giants: Rotation and Decreasing Luminosity as Barriers to Mixing

The Astrophysical Journal Letters
Observations from Juno and Cassini suggest that Jupiter and Saturn may possess fuzzy cores—central regions where the abundance of heavy elements varies smoothly with depth.
Shu Zhang, J. R. Fuentes, Andrew Cumming
doaj   +1 more source

Wind Shear and the Role of Eddy Vapor Transport in Driving Water Convection on Jupiter

The Planetary Science Journal
Recent observations of convection in the Jovian atmosphere have demonstrated that convection is strongly concentrated at specific locations on the planet.
Ramanakumar Sankar, Michael H. Wong, Csaba Palotai, Shawn Brueshaber   +3 more
doaj   +1 more source

On the Origin and Dynamical Evolution of Jupiter’s Moon Amalthea

The Astrophysical Journal
Interior to the orbits of Jupiter’s iconic Galilean moons are four small satellites with individual mean radii R  ≲ 84 km. Multiple lines of evidence suggest that these bodies formed at a more distant location in Jupiter’s circumplanetary disk before ...
Ian R. Brunton, Konstantin Batygin
doaj   +1 more source

A Constraint on the Density of Jupiter’s Moon Thebe from Primordial Dynamics

The Astrophysical Journal Letters
Of the 97 known satellites in the Jovian system, the individual masses and densities of each moon have only been determined for six of them: the four Galileans, Amalthea, and Himalia. In this Letter, we derive a prediction for the mean density (and mass)
Ian R. Brunton, Konstantin Batygin
doaj   +1 more source

Asteroids Fail to Retain Cometary Impact Signatures

The Planetary Science Journal
A bombardment of comets is thought to have occurred in the inner solar system as a result of a dynamical instability among the giant planets after gas disk dispersal.
Sarah Joiret, Guillaume Avice, Ludovic Ferrière, Zoë M. Leinhardt, Simon Lock, Alexandre Mechineau, Sean N. Raymond   +6 more
doaj   +1 more source